taken 2 years ago, near to Crownhill, Plymouth, Great Britain

Crownhill Fort is a Royal Commission Fort built in the 1860s as part of Lord Palmerston's ring of land defences for Plymouth. Restored by the Landmark Trust, it is now home to several small businesses, event spaces, a museum and a holiday apartment. The Fort is open to the public on the last Friday of each month and hosts tours for local schools and societies.
Wikipedia: Link